Electrical System; Battery; Electronic Power Steering (Eps) - Tracker Off-Road 800SX Service Manual

Electrical System

The electrical connections should be checked periodi-
cally for proper function.
TESTING ELECTRICAL COMPONENTS
All electrical tests should be made using the Dealer Diag-
nostic Service (computer connected), gauge diagnostic
menu (a menu in the LCD gauge) or the Fluke Model 77
Multimeter. The Dealer Diagnostic Service can return
data for certain components which are identified at the
beginning of their respective sub-section. If any other
type of meter is used, readings may vary due to internal
circuitry. When troubleshooting a specific component,
always verify first that the fuse(s) are good, the relay(s)
are good, the LED(s) are good, the connections are clean
and tight, the battery is fully charged, and that all appro-
priate switches are activated.
 NOTE: For absolute accuracy, all tests should be
made at room temperature of 68° F (20° C).
NOTE: Certain components and sensors can be

checked by using the gauge diagnostic menu (see
Gauge Diagnostic Menu in this section for more infor-
mation).
SPECIAL TOOLS
A number of special tools must be available to the techni-
cian when performing service procedures in this section.
Refer to the current Special Tools Catalog for the appro-
priate tool description.
NOTE: When indicated for use, each special tool

will be identified by its specific name, as shown in the
chart below, and capitalized.
Description
Dealer Diagnostic Service
Fuel Pump Wrench
EFI Fuel Pressure Test Kit
NOTE: Special tools are available from the Service

Department.

Battery

Component data can be retrieved using the Dealer Diag-
nostic Service. Utilize the Sensor Data screen.
 NOTE: Preliminary checks may be performed on
this component using the diagnostic menu in the LCD
gauge (see Gauge Diagnostic Menu in this section).
The battery is located behind the passenger-side rear
inner fender. When installing the battery, always connect
the positive cable first; then connect the negative cable.
When removing the battery, disconnect the negative
cable first; then disconnect the positive cable.
MOD010B
After being in service, batteries require regular cleaning
and recharging in order to deliver peak performance and
maximum service life. The following procedures are rec-
ommended for cleaning and maintaining lead-acid batter-
ies. Always read and follow instructions provided with
battery chargers and battery products.
NOTE: Refer to all warnings and cautions provided

with the battery or battery maintainer/charger.
Loss of battery charge may be caused by ambient tem-
perature, ignition OFF current draw, corroded terminals,
self discharge, frequent start/stops, and short engine run
times. Frequent winch usage, snowplowing, extended
low RPM operation, short trips, and high amperage
accessory usage are also reasons for battery discharge.
Electronic Power Steering
Component data can be retrieved using the Dealer Diag-
nostic Service. Utilize the Sensor Data screen.
The EPS system is an electro-mechanical device that uti-
p/n
lizes 12-volt DC power to drive a motor linked to the
0544-034
steering shaft to assist the driver when rotating the steer-
0444-310
ing wheel. Driver steering inputs are detected by a
0644-587
torque-sensing transducer assembly within the EPS hous-
ing. These inputs are converted to electronic signals by
the transducer and control circuitry to tell the motor
which way to drive the steering shaft. When no steering
input (pressure on the steering wheel) is detected, no
torque signal is generated, and no steering assist is pro-
vided by the motor.
If an electrical-related EPS system malfunction occurs, a
diagnostic trouble code (DTC) will be displayed on the
LCD gauge. Check for updates and verify any active
DTCs using the most up-to-date Dealer Diagnostic Ser-
vice software. The following is a list of DTCs, possible
conditions, and causes.
(EPS)
109